A380-800
Didn't a 717 do something similar in WA a couple of years ago, stick shaker etc.
Yes it did, but became immediately totally controllable by the crew using the wires pulleys and bellcranks control system as soon as they decided that that was appropriate and the electronics had gone haywire.
Haven't you ever oversped a 717?
I have actually. The subtle difference was that it didn't involve a virtually uncommanded rather harsh pullup to FL380, straight through the level of another aircraft, which thankfully was slightly off track (unusual for GPS tracking). Otherwise, there would have been a few hundred dead people splattered over the North Atlantic.
Computers are really good until they come to a point that the programmers didn't consider (QF72?) or they respond so unexpectedly that the crew is caught completely unawares (TC-JDN).